* Thank you so much.

* You're an angel.

* You're too kind.

* Thanks a bunch.

* You saved my life.

* You saved my day.

* I am very thankful.

* I do not know how to thank you.

* My gratitude knows no bounds.

* Thank you for everything.

* You are great.

* I owe you one.

* You're a dear.

* Thanks a million

* That's so kind of you.

* I thank you most warmly.

* I'm in your debt.

* I can't thank you enough.

* You are a life saver.

* A million thanks to you.